Schematics Database

Dynaco Stereo 70 Series II power amplifier Manufacturer's Comment Stereophile_com.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Series 2

Dynaco Stereo 70 Series II power amplifier Measurements.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Series 2

Acro Sound 20-20.jpg

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

Dynaco ST-70 FS - diyAudio (2).mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

Hotrodding the Eico ST-70 Page-2.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

ST70 FFT - 50 Hz.JPG

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

ST70 OP Triode Conversion.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

ST70 Series 2 Modified Front view.jpg

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

ST70 Series 2 Modified.jpg

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

Stereo 70 Restore Addendumsl-R0.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

st70_welborne_mods.jpg

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > Dynaco ST-70 Upgrades, Modifications & Construction

AVA - Our Famous Original Dyna St-70 Rebuild Plans.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

AVA - Ultimate 70 Vacuum Tube Amplifier.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

AVA Hifi - Ultravalve Amplifier.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

AVA Hifi UltraValve.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Beefing up a ST70.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Differences between the original ST-70 and my VTA ST-70 .mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

DynaMutt-II.png

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

DynaMutt_ST70 Driver Board - Noval Version.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

DynaMutt_ST70 Driver Board - Octal Version.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Classic 60W Circuit.gif

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Modified Williamson.gif

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Products and Modification Overview.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST 70 series II vs original ST-70 Part 1.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST 70 series II vs original ST-70 Part 2.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 - diyAudio.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 Modifications with 12AU7.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 Series III - Page 2 - diyAudio.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 Series III - Page 3 - diyAudio.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 Series III - Page 4 - diyAudio.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 Series III - diyAudio page 1.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST-70 version 6GH8.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70 Assembly Manual.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70 KIT - your opinion please - diyAudio.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70 OM.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70 Power Amp Troubleshooting.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70 Restoration Manual.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70 Series 2 with solid state Power Supply.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70-Tube-Amp-Schematic 2.png

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco ST70.gif

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Stereo 70 II power amplifier Stereophile_com.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Stereo 70 II power amplifier Measurements Stereophile_com.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Stereo 70 Power Amplifier Component Info.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynaco Stereo 70 Tube Amp Reviewed.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Dynakit & Acrosound.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Eico ST70 with 12AX7-6SN7 Drive.gif

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

How good can an ST-70 be made.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Our Famous Original Dyna St-70 Rebuild Plans By Frank Van Alstine.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

Run your Dynaco ST-70, Mark II, Mark III or Mark IV in TRIODE MODE - photo.mht

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff

ST-70 Base Line Testing.pdf

Category: Audio > Circuits > Power Amplifiers > Tube > Dynaco-Hafler > ST70 Stuff